Carvans CodeChef Solution

Today we will be solving Carvans CodeChef Solution which is the part of CodeChef DSA Learning Series.

Problem

Most problems on CodeChef highlight chef’s love for food and cooking but little is known about his love for racing sports. He is an avid Formula 1 fan. He went to watch this year’s Indian Grand Prix at New Delhi. He noticed that one segment of the circuit was a long straight road. It was impossible for a car to overtake other cars on this segment. Therefore, a car had to lower down its speed if there was a slower car in front of it. While watching the race, Chef started to wonder how many cars were moving at their maximum speed.

Formally, you’re given the maximum speed of N cars in the order they entered the long straight segment of the circuit. Each car prefers to move at its maximum speed. If that’s not possible because of the front car being slow, it might have to lower its speed. It still moves at the fastest possible speed while avoiding any collisions. For the purpose of this problem, you can assume that the straight segment is infinitely long.

Count the number of cars which were moving at their maximum speed on the straight segment.

Input 

The first line of the input contains a single integer T denoting the number of test cases to follow. Description of each test case contains 2 lines. The first of these lines contain a single integer N, the number of cars. The second line contains N space separated integers, denoting the maximum speed of the cars in the order they entered the long straight segment.

Output 

For each test case, output a single line containing the number of cars which were moving at their maximum speed on the segment.

Example 

Input:

3
1
10
3
8 3 6
5
4 5 1 2 3

Output:

1
2
2

Constraints 

1 ≤ T ≤ 100

1 ≤ N ≤ 10,000

All speeds are distinct positive integers that fit in a 32 bit signed integer.

Each input file will not be larger than 4 MB (4,000,000,000 bytes) in size.

WARNING! The input files are very large. Use faster I/O.

Solution – Carvans CodeChef Solution

Java

/* package codechef; // don't place package name! */
import java.util.*;
import java.lang.*;
import java.io.*;

/* Name of the class has to be "Main" only if the class is public. */
class Codechef
{
	public static void main (String[] args) throws java.lang.Exception
	{
		// your code goes here
		Scanner sc = new Scanner(System.in);
		int t= sc.nextInt();
		while(t-->0)
		{
		    int n= sc.nextInt();
		    int max= Integer.MAX_VALUE;
		    int count=0;
		    while(n-->0)
		    {
		        int speed=sc.nextInt();
		        if(max>=speed)
		        {
		            max=speed;count++;
		        }
		    }
		    System.out.println(count);
		}
		
	}
}

C++

#include <bits/stdc++.h>
typedef long long ll;
using namespace std;

int main() {
	ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL);
	int t ;
	cin >> t;
	while(t--){
	int n;
	cin >> n;
	int arr[n];
	for(int i=0;i<n;i++){
	      cin >> arr[i];
	}
	int min = arr[0];
	int c=1;
	for(int i=1;i<n;i++){
	      if(arr[i]<=min){
	            c++;
	            min = arr[i];
	      }
	}
	cout << c <<'\n';
	}
      return 0;
	}

Disclaimer: The above problem (Carvans: CARVANS) is generated by CodeChef but the solution is provided by CodingBroz.

Broz Who Code

CodingBroz